Clutch-operating mechanism



May 29, 1928.

J. P. GRUNDON CLUTCH OPERATING MECHANISM Filed May 5, 19% 2 Sheets-Sheet 2 d'. P. GR vzrpozf Patented May 29, 1928.

mm; P. GRUN-DON, OF 170m. DODGE, IOWA.

cwrqxwvnser m maime- The principal object of this ii ventim is to provide a simplear d efficient means for ac e i iga lutch me hanism i A'further object of the invention is to pr id me n x e t d to be et in m tinn by agc t iaction of it hand leverfor utilizing the momeh tiim of g rotating member for setting or releasing a heavy-duty clutch.

More speoifioelly, the object of this 'inyention is to rovide efpa ir of brake drums mounted s de by side and having"band brakes thereon adapted for sel tive manr 1 'epers ien f t pu p s of utilizing the moment rr of 3 revolving wheel located adjacent brake dr ums rm setting or releesing sheavy-duty olut ch carried by said reyolvir g yvheel ar d epplieable to ainember to be driven therefrom.

With these and otherobjects in View, my igventiop consists i the eonstruction, rgr gernent and oombing tion of elements hereir efter set forth, pointed out i the claims at; indicated by the accompanying 51? Wing n w h= i s- 1 s a id v vi tie i ee ratm t .eon p lete mechanism, portior s lot the driving wheel being br n w y o 913W3$ of llu ati ni l Fig. 2 is a hOlfiZQQ3l section of the eluteh-operati-rrg means on gm enlarged scale n h lin of Figv Fig, 3 is gt side elevation partly in section sl pvvig g portiogrs of the irrechgliisip the position they ocoi y when the heavyedrtty l t h is e or pp ed- Fig- 4 is a Vi w m lar t0 Fi 3 how ng the same parts ir the position they occupy wh n h dutch i re e ed- This m chani m is p ed t be agp ied an mp yed r th op at f 5 5 duty band. clutch such as is icommonly em- Be ov d n x av t ng a hine y d h like for clutching a drum to a driving wheel, the drum being employed to receive a cable which is adapted to be wound thereon. D ly sgch portions of themechanism are here shown as are necessaryto gm understanding of my present invention. Th p in p l memb of th m n mes nism are a Shaft- 10 suit-ably mounted for rotation in bearings 10 one of which is shown. Fixed to the shaft 10 is e driving wheel 11 whi h m ybe a spur ge r o ny other u table yp Whe Le s y mount d on he haft 1 edia ent t t Wheel 11 is a drum m 81- 1 Whih i from rotation. Any suitable braking means .1 spel n lame.

qdapted for rotation with said wheel at times and as here shown, is adapted to receive .3 cableor the like. The druin or reel 2 1S iorii ed with a 13011 that side next 9 the dr ving Wheel 1. 3 Wh sk rim s 9 circled e band clutch ember. M of (391111 3101) orm. A clutch- 0 erating lever 15 is p voted between its en S by a olt 16 wh ch carried by the wheel 11, As here shown, the ibol tlfi is carried by 3 spoke of the Wheel 11 it a point adjacent its periphery aiidthe lever 15 is bent so as to ass from one side to the other of the whee '11 betvveepthe spokes thereof. One point of the .oltltchbai d 14 is pivotallysecured to the Wheel l l by means of a stud or bolt 17 which is'locz ted adjacent the Ol ltel end of the spoke which carriesthe f lcrum bolt 16 of the el i tcfh-operati ig lever. The barld cl tch is provided with it suitable gdjusting m lns 11 includes an y 1 li ja mounted on g threaded boltvl-9 whichis pivoted on the stud or pin 17, the eye being ic fin d b twee n ts '2 e iw l m un on said bolt. The oposite end of the clutch is pivotplly secured by a, bolt or the like cerried by the sliort en dof the clutchoperating lever 15. When the lever 15 is actuated to cerry the movable end of the clutch bend tovvard the relatively fixed end Whioh is connected by the boltlT, the clutch is set or tightehed relative tothe rim and the drum l2is caused therebyfto revolve with the driving wheel ll-z nd the shaft- 110.

W en th lever 5 is m e o as to carry the point 21 away from the point 17. the .ol utch is released and the drum 12 is stopped maybe employ edit desired for causing imnedia-tevstoppege of thedr uri 12 when the me ns f b m: he ike 99! he arm f the Plum -wast ng e er 1 for d midi pive al y wa e by a bel 9 rivet t one mw f h bel reek 28 he eth arm @1 th bellra k ni efied p at 40 on a bracket or standard 41.

by a belt or rivet 31 to one end portion of a link 32 which has its opposite end pivotally attached by means of a ca screw 33 to the innermost drum 24. An adjusting screw 34 is threaded into a boss 35 formed on the inner end of the sleeve 23 and is adapted to serve as a stop to limit movement of the bellcrank lever 28 and clutch-operating lever 15 in one direction. The adjusting screw 34 may be provided with a lock nut 36 to hold it in adjusted position.

Suitable brake bands 37 and 38 are mounted on the drums 24 and 25 respectively and are adapted for selective operation. The means for manually operating the brake bands 37 and 38 is shown in Fig. 1 and includes a hand lever 39 fulcrumed Operating rods 42 and 43 are pivotally connected at one end'each to the lever 39 and on o posite sides of the fulcrum thereof. T 16: operating rod 43 extends through an eye 44 formed on one end of the brake band 38 and the rod 42 extends through a similar eye (not shown), formed on the brake band 37. The rods 42 and 43 are threaded at their ends and provided with adjusting nuts 45 on opposite sides of the eyes 44 by means of which the brake bands may be adjusted. The opposite ends of the brake bands 37 and 38 are rigidly attached to a frame member 46. Cushioning spring 47 and 48 preferably are mounted on the rods 42 and 43 respectively, said springs engaging with the frame member 46 and at the other end with adjusting nuts 49 threaded on the respective rods.

When it is desired to apply the clutch band 14 to the rim 13 so as to cause rotation of the reel 12 with the driving wheel 11, the hand lever 39 is manually moved to the right as seen in Fig. 1, thus causing a pull on the lower connecting rod 43 and tightening the brake band 38 on the drum 25. As the drum 25 is fixed to the sleeve 23, this action causes a stoppage of the sleeve 23 which is rotating with the wheel 11, the direction of rotation being indicated by the arrows in Figs. 3 and 4. A limited reverse movement of the sleeve 23 relative to the rotating wheel is thus caused, which has the eflect of throwing fulcrum 29 of the bell-crank 28 to the right as viewed in Fig. 4, thereby Causing an oscillation of said bellcrank to the position shown in Fig. 3 and a consequent oscillation of the clutch-operating lever 15. This oscillation of the lever 15 carries the movable pivot 21 of the clutch band 14 toward the fixed pivot 17 thereof, thereby effecting a tighening of the band on the rim 13. As the members to which the clutch band 14 are attached are-carried by the rotating wheel 11, this action has theresult of clutching the reel 12 to said wheel and causing 8.

conjunctive rotation thereof. It should also be noted that the movement of the bellcrank lever 28 from the position shown in Fig. 4 to the position shown in Fig. 3 above referred to, will also result, through its connection to the link 32, in a limited forward movement of the innermost drum 24, said link being pivoted to said drum 24 by the screw 33. 7

When it is desired to release the clutch band 14 from the reel, the hand lever 39 is moved in the opposite direction past its neutral position as indicated in Fig. 1, which results in a pull on the rod 42 and at the same time a. push on the rod 43. This releases the brake band 38 from the outermost drum 25 and applies the brake band 37 to the innermost drum 24. This application of the brake to the innermost drum 24 causes a momentary stoppage of its rotation with the other movingparts and a limited reverse movement which results in carrying the parts from the position shown in Fig. 3 to that shown inFig. 4 by a rearward thrust on the link 32. This thrust results in an oscillation of the bellcrank lever 28 and a consequent forward movement of its pivot 29 and with it the sleeve 23, the oscillation of the bell-crank resulting in an oscillation of the clutchoperating lever 15 which carries the movable pivot 21 ot the clutch band 14 away from the fixed pivot 17 thereof'and releases the clutch band from the reel 12.

This mechanism provides a very simple and easy method of operating the clutch mechanism for the purpose of applying or releasing the clutch band relative to the drum 12, the momentum of the driving wheel 11 being employed to operate the clutch lever 15 in each instance. A very small amount of force is required to operate the hand lever 39 which is very nicely balanced by the springs 47 and 48 and very little force is necessary to apply the brake bands 37 and 38 and cause the limited reverse movement of the drums 24 and 25 for releasing and applying the clutch. respectively.

When the members move to position for applying the clutch as shown in Fig. 3, the reverse movement of the sleeve 23 is sufiicient to carry the pivot- 29 of the bell-crank loosely engaging the hub of said wheel and capable of a limited rotary movement in both directions relative thereto, a pair of drums mounted on said sleeve, one of said drums being fast and the other being loose on said sleeve, brake bands engaging said drums, manually operated means for selectively applying the bands to said drums, a pivotal connecting means between said sleeve and the clutch-operating lever for tightening the clutch band on said driven member when said sleeve is turned in one direction relative to the wheel through the instrumentality of the drum which is fast on said sleeve, and a connecting means between the first mentioned connecting means and the drum which is loose on said sleeve for releasing said clutch band by causing the sleeve to be turned in the'opposite direction relative to the wheel.

2. The combination with a wheel mounted for rotation, a driven member designed to be clutched thereto, a clutch band adapted,

for engagement with said driven member, a clutch-operating lever fulcrumed on said wheel and having one end engaging the movable end of said clutch band; of a clutchoperating mechanism comprising a sleeve loosely engaging the hub of said wheel, a pair of drums mounted side by side on said sleeve, one of said drums being fast and the other being loose on said sleeve, brake bands engaging said drums, manually operated means for selectively applying the bands to said drums, a bell-crank lever pivoted on said sleeve and pivotally connected at one end to the clutch-operating lever, and a pivotal connection between the other arm of said bellcranlr lever and the drum which is loose on said sleeve.

The combination with a wheel mounted for rotation, a driven member designed to be clutched thereto, a clutch band adapted for engagement with said driven member,

a clutch-operating lever fulcrumed on said wheel and having one end engaging the movable end of said clutch band; of a clutchoperating mechanism comprising a sleeve loosely engaging the hub of said wheel, a bell-crank lever pivoted on said sleeve and pivotally connected at one end to the clutchoperating lever, manually operated means ior causing a limited reverse movement of said sleeve to oscillate the bell-crank lever and clutch-operating lever for tightening said clutch band, and manually operated means for causing alimited relative forward movement of said sleeve to oscillate said bellcranlt lever and clutch-operating lever in the opposite direction for releasing said clutch band.

t. The combination with a wheel mounted for rotation, a driven member designed to be clutched thereto, a clutch band adapted for engagement with said driven member a clutch-operating lever fulcrumed on said wheel and having one end engaging the movable end of said clutchband; of a clutchoperating mechanism comprising a sleeve loosely engaging the hub of said wheel, a bell-crank lever pivoted on said sleeve and pivotally connected at one end to the clutchoperating lever, manually operated means for causing a limited reverse movement of said sleeve to oscillate the bell-crank lever and clutch-operating lever for tightening said clutch band, adjustable means for limiting movement of said bell-crank lever and clutch-operating lever in one direction, and manually operated means for causing a limited relative forward movement of said sleeve to oscillate said bell-crank lever and clutch-operating lever in the opposite direction for releasing said clutch band.

5. The combination with a wheel mounted for rotation, a driven member designed to be clutched thereto, a clutch band adapted for engagement with said driven member, a clutch-operating lever fulcrumed on said Wheel and having one end engaging the movable end of said clutch band; of a clutchoperating mechanism comprising a sleeve loosely engaging the hub of said Wheel, a pair of drums mounted side by side on said sleeve, one of said drums being fast and the other being loose on said sleeve, brake bands engaging said drums, a hand lever, connecting rods pivoted to said hand lever on opposite sides of the fulcrum thereof, connections between the opposite ends of said connecting rods and therespective brake bands, abellerank lever pivoted on said sleeve and pivotally connected at one end to the clutchoperating lever and a pivotal connection between the other arm of said bell-crank lever and the drum which is loose on said sleeve.

6. The combination with a wheel mounted for rotation, a driven member designed to be clutched thereto, a clutch band adapted for engagement with said driven member, a clutch-operating lever fulcrumed on said wheel and having one end engaging the movable end of said clutch band; of a clutchoperating mechanism comprising a sleeve loosely engaging the hub of said wheel, a pair of drums mounted side by side on said sleeve, one of said drums being fast and the other being loose on said sleeve, brake bands engaging said drums, manually operated means for selectively applying the bands to said drums, a bell-crank lever pivoted on said sleeve, a link pivotally connecting one arm of said bell-crank leverwith the drum which is loose on said sleeve, the other arm of said bell-crank lever having pivotal connection with said clutch-operating lever, and adjustable means for limiting oscillation of said bell-crank lever and clutch-operating lever in one direction.

JOHN P. GRUNDON. 

